function srceen() {
    var _height="";
    $("#screen").on("click",function () {
        if ($(this).text()=="全屏"){
            _height=$(".viewMap1").height()
            $("#scree").attr('style',"position:fixed;left:0px;top:0px;width:100%;height:100%;z-index:9999");

            $("#screen").text("退出全屏");
        } else if($(this).text()=="退出全屏"){

            $("#scree").attr('style',"")
            $(".viewMap1").height(_height)
            $("#screen").text("全屏");
        }
    });
}